Answer:
1. D- All of the above
2. B- The material the acid is poured on
3. C- Mass of the ball
4. A- Temperature
Step-by-step explanation:
2. The control variable is what stays the same so the material the acid is poured on must be the same as different materials have different reactions to acids.
3. The independent variable is what's being changed and in this experiment the mass of the ball is changed each time
4. The independent variable is what's being changed and in this experiment the temperature is different in each cup.
Hope this helped! :)
is the relationship below proportional or non-proportional?
Answer: The following table is proportional
Step-by-step explanation:
If you see closely, you can calculate the slope of the graph (y=Mx+b)
for the first values, the number of tickets is 5 and the cost is $40. Effectively, one ticket cost $8 (40/5). So, cou can plug this value in to the x values and check if it matches with the y- values. For sample, 10 tickets 10x8= $80, which matches the table. All these values work.
Answer:
The relationship below is proportional.
Step-by-step explanation:
As we can see to get from 5 tickets to $40 you multiply by 8.
As we can see to get from 10 tickets to $80 you multiply by 8.
As we can see to get from 15 tickets to $120 you multiply by 8.
As we can see to get from 20 tickets to $160 you multiply by 8.
So to make this into an equation we get y=8x
So the relationship is proportional.
Help me! I’m in need of Guinness!
Answer:
you're answer is C 80.67
math helllllp meeee :(
Answer:
surface area is 86647.97 yd²
NEED HELP WITH WHATS IN PICTURE!
Answer:
(b) y = 4x +15; y = 10x -2
Step-by-step explanation:
It is often sufficient to check for reasonableness in the offered answers. That is the case here.
__
The offered answer choices differ in the combinations of slope. The offered slopes (x-coefficients) are 4 or 1/4, 10 or 1/10, so it is sufficient to determine if the slope is greater than 1 in each case.
The slope is the ratio of the change in y to the change in x. It will be greater than 1 if y changes by a larger number than x does.
1st Tablex-values in this table change by 4-2 = 2. y-values change by 31 -23 = 8, which is more than 2. The slope is greater than 1 for the first equation. (It is 8/2 = 4.)
2nd TableThe first two x-values in this table differ by 0-(-1) = 1. The first two y-values differ by -2-(-12) = 10, which is more than 1. The slope is also greater than 1 for the second equation. (It is 10/1 = 10.)
Answer choicesThe x-coefficients in the answer choices are ...
a) 1/14, 1/10 . . . incorrect
b) 4, 10 . . . . correct
c) 1/4, 10 . . . . partly correct
d) 4, 1/10 . . . . partly correct
PLEASE HELP Select the correct comparison
Answer:
A
Step-by-step explanation:
Set a's typical value is 7.2, set b's is 6.
Set a's spread is 3, set b's spread is 7.
7.2 > 6
3<7
Therefore, the answer is A.
Which of the following is closest to the diagonal length between A and B?
I don’t understand this or what it means? I would like it if you showed work and explained why, thx so much!
Answer:
54cm^2
Step-by-step explanation:
You need to calculate area of the given figure. To solve this there are two figures together, triangle and rectangle.
first find area of rectangle given length = 8 cm and breadth = 4cm
therefore area of rectangle = l * b = 8 * 4 = 32 cm^2
To find area of triangle:
The triangle itself is divided into two right angled triangle.
Now base of one right angled triangle will be 4/2 = 2cm
Area of rt. angled trangle = 1/2 * b*h = 1/2 * 2 * 11 = 11cm^2
Therefore area of whole triangle = 11*2 = 22cm^2 (since there are two rt.angled triangle)
Total area of given figure = 32 + 22 = 54 cm^2
(Mark answer as brainliest if you like this answer)
Find the circumference of the circle
Answer:
22cm
Step-by-step explanation:
[tex]\pi7 \\ [/tex]
Need the answer ASAP
(20 points)
The Empire State Building is just over 1,450 feet tall. In anticipation of visiting this landmark on your vacation, you create a model of it using blocks.
part b) Suppose you are making a model where one block represents 5 feet. About how many blocks tall is your model of the Empire State Building? What is the scale factor? (2 points)
Answer:
You would need about 290 blocks, and the scale factor would be 1450:290.
Step-by-step explanation:
5ft: 1 block
1450ft: x blocks
So,
1450 x 1 = 1450 ÷ 5 = 290
And now we have,
5ft: 1 block
1450ft: 290 blocks
Hope this helps. Have an amazing day!
What is the value of Sx3 + 4y3 when x=4 and y=3?
Step-by-step explanation:
is there any value for S??
MATH!! COMPUTE THE AREA OF A CIRCLE!!
Answer:
First answer is correct
Step-by-step explanation:
pi*r^2
use formula and substitute
r is the radius so half the diameter
Each evening, Billy jogs around the high school track at a constant rate. The following equation describes the relationship between t, the time he jogs in hours, and d, the distance he jogs in kilometers. d = 7t Which graph represents the relationship between the amount of time Billy jogs and the distance he jogs?
Please answer for me its due tomorrow aka Friday here is 19 points for answering.
1 13/10
2 1/20
3 3/10
4 69/20
5 191/60
6 17/15
these answers may not be right, but its the best I can do
I did them in order from top left, down one, down one, then top right, down one, down one.
write an expression to represent a number squared, added to 5
Answer: x^2+5
Step-by-step explanation:
x is the unknown variable which is representing the number squared and then you add 5 to complete expresssion.
Answer:
x² + 5
Step-by-step explanation:
Given statement:
"number squared, added to 5"We know the following:
1. "number squared" ⇒ A number multiplied to the same number.
Let the number be known as "x". Then;
[tex]\implies x \times x[/tex]
[tex]\implies \underline{x^{2}}[/tex]
2. "added to 5" ⇒ Addition between number, squared and 5.
Let the number be known as "x". Then;
[tex]\implies (x)^{2} + 5[/tex] [tex](\text{number, squared} \implies x^{2} )[/tex]
[tex]\implies \boxed{x^{2} + 5}[/tex]
Therefore, the expression that represents the statement is x² + 5.
A company tracks the number of shirts sold per month.
During the first month, the company sold 560 shirts.
During the second month, the company sold 20% more shirts than in the first month.
During the third month, the company sold 812 shirts.
What was the percent increase in the number of shirts sold from the second month to the third month? Approximate to the nearest percent.
Answer:
4060
Step-by-step explanation:
if my calculator is right then thats the awnser
Answer:
4,060
Step-by-step explanation:
I think that shall be correct!!!!
HAVE A GREAT DAY
Am I correct, and if not, what is the right answer?
I need help with this equation?
Answer:
12x - 14y cubic yards
Step-by-step explanation:
a keyword in this is... difference
it also asks you to compare the first truck to the second truck not the second to the first
x = the amount of mulch the first truck can deliver
y = the amount of mulch the second truck can deliver
the first truck takes 12 trips so 12 trips multiplied by x (the amount of mulch the first truck can deliver) is 12x because it doesn't give us x
the second truck takes 14 trips so 14 trips multiplied by y (the amount of mulch the second truck can deliver) is 14y because it doesn't give us y
The question asks for the difference between the total number of cubic yards that the first truck carries through their 12 trips and the total number of cubic yards that the second truck carries through their 14 trips.
This gives us, 12x - 14y cubic yards
hopefully, this makes sense :)
Answer:
12x - 14y cubic yards
Step-by-step explanation:
braniliest pls
Fastest way to solve this? NOT LOOKING FOR THE ANSWER with logical explanation please about how to solve it.
A train is going 72km/h (20m/s)
it's passing a 500m long tunnel and it took 30s
how long is the train? (600m)
Answer:
Distance of Tunnel is 500 meters + Train travel rate is 20 meters per second = 25 seconds to pass through the tunnel only therefore the outstanding balance of 35 seconds x 20 meters per second =600 meters Train
Step-by-step explanation:
Total of length of train 600 meters and tunnel (500 meters) is 1,200 meters +30 seconds = TR of 20 meters per second
PLS HELP ME I NEED HELP ON THIS!!
Answer:
Step-by-step explanation:
We multiply 4/5 times 3/1 to find how many miles the penguins swam in one hour.
4 x 3/5 x 1
12/5
The penguins swam 12/5, or 2 and 2/5 miles in one hour.
Table:
Miles 4/5 12/5
Hours 1/3 1
Answer:
We multiply 4/5 times 3/1 to find how many miles the penguins swam in one hour.
4 x 3/5 x 1
12/5
The penguins swam 12/5, or 2 and 2/5 miles in one hour
Step-by-step explanation:
brainliest please
find the surface area of the prism 17ft 8ft 15ft 20ft
Answer:
15ft
Step-by-step explanation:
Andy got 45% of the 80 words right in his spelling quiz .How many words did he get wrong?
brainliest** find the circumference of the objects use 3.14 or [tex]\frac{22}{7}[/tex] for [tex]\pi[/tex]
also do all 3
Answer:
c = 28.26 cm
Step-by-step explanation:
equation for circumference of a circle is 2πr
r = d/2 so here r = 9/2 = 4.5
2 x 3.14 x 4.5 = 28.26
i only knew one sorry :((
Calculate the area of the following composite figure.
math need hhelp with
Answer:
Use the formula for surface area of a cone:
SA = π[tex]r^{2}[/tex] · πrs
'π' stands for the pi(22/7 or 3.14) and 'r' stands for the radius which is being squared. ← This will represent the area of the base of this cone.
'π' stands for the pi(22/7 or 3.14), 'r' stands for the radius, and 's' will stand for the slant height of this cone. ← This will represent the area of the lateral surface of this cone.
What we know;
Slant height = 8 cmRadius = 3 cmCorrect me if i'm wrong with these measurements.
Now plug in what you know into the formula:-
SA = π[tex]r^{2}[/tex] · πrs
SA = 3.14(3^2) · 3.14(3) · 8
Quick note: The ' ^ ' symbol stands for a power symbol, meaning that any base is raised to the power of any exponent.
Solve!
SA = 3.14(9) · 3.14(3) · 8
SA = 28.26 · 9.42 · 8
SA = (28.26 · 9.42) · 8
SA = 266.2092 · 8
SA = 2,129.6736, and rounded to the nearest whole is 2,130.
The surface area of this cone is, 2,130 square centimetres.
5m 5m 4m 6m 7m please help
Answer:
The surface area would be 76m square!
Step-by-step explanation:
Answer:
The surface area would be 76m square!
Step-by-step explanation:
Because if you add everything it equals 76 hope this helps
What value added to the set below would give a mean of 33?
{19, 27, 64, 36}
19
30
27
42
Answer:
19
Step-by-step explanation:
Given:
data = [19,27,64,36]mean value = 33To find:
another data / last dataTherefore:
New data is 19,27,64,36,xWhere x is an unknown value/data.Mean Value:
[tex]\displaystyle \large{m=\dfrac{1}{n}\sum_{i =1}^n x_i \to \dfrac{x_1+x_2+x_3+...+x_n}{n}}[/tex]
m = mean valuex1+x2+x3+...+xn = sum of all datan = amount of dataTherefore:
[tex]\displaystyle \large{33=\dfrac{19+27+64+36+x}{5}}[/tex]
Solve for x - first, multiply both sides by 5 to clear out the denominator:
[tex]\displaystyle \large{33\cdot 5=\dfrac{19+27+64+36+x}{5} \cdot 5}\\\displaystyle \large{165=19+27+64+36+x}[/tex]
Evaluate the sum:
[tex]\displaystyle \large{165=146+x}[/tex]
Subtract both sides by 146:
[tex]\displaystyle \large{165-146=146-146+x}\\\displaystyle \large{19=x}[/tex]
Therefore, another value/data that will give a mean value of 33 is 19.
Please help!! Thanks
Solve for a.
6a–5=7+8a
Answer:
-6
Step-by-step explanation:
6a - 5 = 7 + 8a
6a - 8a = 7 + 5
-2a = 12
a = 12/-2
a = -6
Hope it helps:)
Once each week, Jeremy measures the growth of a plant and records it in a table. What is the independent variable?
Answer:
The growth of the plant
Step-by-step explanation:
the plant isn't dependant on anything (well at least that we know of)
Cole goes to the farmers' market every month to buy some of Ms. Lin's homemade jam. The jam costs $5 per jar. Last weekend, Ms. Lin gave a 20% discount for buying at least two flavors. So, Cole bought b jars of blackberry jam and s jars of strawberry jam.
Pick all the expressions that represent how much Cole spent on jam last weekend.
0.20b + 0.20s
0.80 (5b + 5s)
4b + 4s
4 (b + s)
Please include an understandable explanation
Answer:
These are all the expressions that represent how much cole spent on jam last weekend.
0.80 (5b + 5s)
4b + 4s
4 (b + s)
Answer: 0.80 (5b + 5s)
Step-by-step explanation:
2. Mrs. Johnson asked her 6th-grade students to form a number pattern using these rules. 1) Use the number 1 as the first term. 2) To find any other term, double the previous term and add 2. The first two numbers in the pattern are 1 and 4. What is the 4th number in the pattern? А 20 B 22 С 44 D 46
Answer:
22
Step-by-step explanation:
You can just use the previous terms to derive the 4th term.
3rd term: 4(2) + 2 = 10
4th term: 10(2) + 2 = 22
The 4th number in the pattern is 22 .
What is a pattern?
A pattern is a repeated arrangement of numbers, shapes, colors and so on. The Pattern can be related to any type of event or object. If the set of numbers are related to each other in a specific rule, then the rule or manner is called a pattern. Sometimes, patterns are also known as a sequence.
According to the question
Mrs. Johnson asked to form a number pattern using these rules.
rule1: Use the number 1 as the first term.
rule2:To find any other term, double the previous term and add 2
and The first two numbers in the pattern are 1 and 4
therefore ,
First term : 1
Second term : 4 (1*2+2)
Third term : 10 (4*2+2)
Fourth term : 22 (10*2+2)
Hence, the 4th number in the pattern is 22 .
To know more about pattern here :
https://brainly.com/question/23037339
# SPJ2